摘要
目前国内已投运大容量储能电站使用的电池大多数为电动汽车电池生产线所生产的产品,测试其产品性能的方法多为标准工况或电动汽车行驶工况。分析某大容量储能电站各种控制模式下历史运行数据,提出一种大容量储能电站典型测试工况的设计方法,以电流幅值分布、电流变化率及充放电转换次数作为特征值,综合考虑重复周期内能量转移代数和为0。算例中1 h典型测试工况与真实运行工况特征值概率分布总误差小于2%,实现了基于典型测试工况的锂电池模组性能衰减实验室测试,为研究储能电站电池选型和性能评估提供了技术手段。
At present,the batteries used in the large-capacity energy storage power station are mostly the products manufactured by electric vehicle battery production line,so their performance test methods are mostly standard working conditions or electric vehicle driving conditions. Through the analysis on the historical operation data of large-capacity energy storage power station,this paper proposes a design method of large-capacity energy storage power station under typical test condition,which takes the distribution of current amplitude,the change rate of current and the conversion time of charge and discharge as eigenvalue,and comprehensively considers the algebraic sum of energy transfer as zero in a repeat cycle. The total error of the eigenvalue probability distribution is less than 2% between the typical test conditions in the examples and the real operating conditions. Finally,this paper completes the performance degradation laboratory test of lithium battery module based on typical test conditions,which can provide the technical support for the battery selection and performance evalution of energy storage power station.
出处
《电力建设》
北大核心
2016年第8期155-160,共6页
Electric Power Construction
基金
国家电网公司科技项目(电动汽车电池规模化梯次利用关键技术深化研究)
关键词
储能系统
概率分布
典型工况
性能衰减
energy storage system
probability distribution
typical condition
performance deterioration
